The duo soaked up the attention as they made their way through the cabin with passengers cooing, "Oh my gosh! Look at him," and "They're just so cute." "Pete and Penny are obviously enjoying their training to become flight attendants," Roth wrote. "You'll note that since they were sitting in first class, they are wearing their tuxedos!" Pete and Penny were on their way to New York for the premiere of the upcoming Discovery Channel/BBC series "Frozen Planet." The show is from the makers of the highly popular "Planet Earth" series and premieres Sunday, March 18 at 8 pm ET. For more on this story, click here: abcnews.go.com